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Finding the Fourth Proportional to 84,628.70, 126,942.78 and 25,464.30

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Solution

The fourth proportional to 84,628.70, 126,942.78 and 25,464.30 is: 38,196.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,628.70 : 126,942.78 = 25,464.30 : x
  2. Step 2: Convert to fraction form
    84,628.70/126,942.78 = 25,464.30/x
  3. Step 3: Cross multiply
    84,628.70x = 126,942.78 × 25,464.30
  4. Step 4: Simplify right side
    84,628.70x = 3,232,509,032.75
  5. Step 5: Solve for x
    x = 3,232,509,032.75/84,628.70
  6. Step 6: Final answer
    x = 38,196.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.